Celeb Spotter 039: Jessica Alba, Lady Gaga and Mariah Carey

Jessica Alba stepped out for multiple events in New York City this week in a pair of chic looks that flaunted her growing baby bump (it's a boy!), while stars like Lady Gaga, Jessica Alba and Justin Timberlake attended the first couple of World Series games in Los Angeles.

V Magazine threw a star-studded party honoring Karl Lagerfeld that attracted big names like Mariah Carey, Gigi and Bella Hadid, Joan Smalls and Kris Jenner, some of whom were also seen out and about in the following days rocking some memorable street style looks, too.

More of our favorite sightings of the week came from Paris Hilton, David Beckham and Anna Faris.